Fluid motor



J. M. WOLF FLUID MOTOR Nov. 1, 1932.

Filed April 24, 1930 8 Sheets-Sheet l J. M. WOLF Nov. 1, 1 932.

FLUID MOTOR 8 Sheets-Sheet 2 Filed A ril 24, 1930 J. M. WOLF FLUID MOTOR Nov. 1, 1932.

8 Sheets-Sheet 3 Filed April 24. 1930 (iii N fi Nov. 1, 1932.

J. M.: WOLF FLUID MOTOR 8 Sheets-Sheet 4 Filed April 24. 1930 INVENTOR.

7/ ll/ fl// J. M. WOLF FLUID MOTOR Nov. 1, 1932.

8 Sheets-Sheet 5 1 7 /9 Filed April 24, 1930 Nov. 1, 1932 J. WOLF FLUID MOTOR Filed April 24, 1930 8 Sheets-Sheet 6 ATTORW J. M. WOLF FLUID MOTOR Nov. 1, 1932.

Filed April 24; 1930 8 Sheets-Sheet 7- IINVENTOR.

J. M. WOLF FLUID MOTOR Filed April 24. 1:30

8 Sheets-Sheet 8 gwumato'c Patented Nov. 1, 1932 UNITED STATES PATENT OFFICE JOHN M. WOLF, OF KANSAS CITY, MISSOURI, ASSIGNOR OF ONE-HALF T CARL BINGESSER, OF KANSAS CITY, .MISSOURI FLUID MOTOR Application filed April 24, 1980.- Serial No. 446,989.

This invention relates to a forced feed fluid transporting mechanism particularly adapted for use in connection with wells and which is of the general character disclosed in Letters Patent issued to me February 17 1931, and numbered 1,792,723.

The particular aim of the present invention is to provide a novel construction of valve mechanism which is operable by the piston in order to automatically reverse the valve for supply of operating fluid or exhaust of spent supply.

A further object is to provide a novelrotary valve mechanism to control the supply and exhaust of the power means.

Another obje t is to provide a construction having novel means whereby pressure medium may be controlled .so as to blow the fluid in the flow line or tube.

Still another object is to provide a novel construction having a safety valve which is adapted to relieve the structure automatically of undue pressure caused by over supply of owe-r fluid.

arious additional objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawings illustratin an operative embodiment. to "in said drawings:-

Figures 1, 2, 3, 4 and 5 are central vertical sectional viewsof sections or portions of the apparatus constituting my invention and are to be considered successively, as showing the complete apparatus from top or lower portion in Figure 5;

Figures 6 and 7 are cross sectional views on an enlarged scale taken on the lines 6-6 and 77, respectively, of Figure 1;

Figures 8, 9 and 10 are cross sectional views taken on the lines 88, 9-9 and 10 10, respectively, of Figure 2;

Figures 11, v12 and 13 are sectional views taken on the'lines 11-.11, 12-12 and 1313,

respectively, of Figure 3;

Figure 14 is a longitudinal sectional view taken through the parts of Figure 4 and at a right angle thereto;

Figures 15, 16 and 17, respectively, are

or upper portion in Figure 1 to the bottom cros sectional views taken on the lines 15-. 5, 16'16 and 17-17 of Figure 4;

Figure 18 is a detail elevation, partly broken away, illustrating the fluid inlet passages of the upper block;

Figure 19 is a detail sectional view taken on the line 19-19 of Figure 5;

Figure 20 is a cross sectional view taken on the line 20--20 of Figure 4;

Figure 21 is a cross sectional view taken on the line 21-21 of Figure 5;

Figure 22 is a longitudinal sectional view taken on the line 2222 of Figure 14;

Figure 23 is a cross sectional view taken on the line 23-23 of Figure 14;

Figures 24 and 25 are detail elevations taken from'reverse sides of the valve mounting block, the former being partly broken away to disclose details; and Figure 26 is a longitudinal sectional view of a well casing showing the device therein partly in eleva- .tion and partly broken away and in section.

Referring specifically to the drawings, 10 designates the usual casing as employed in connection with oil wells. A flow pipe or discharge tube is arranged centrally of the casing as at 11. Surrounding the flow tube or pipe adjacent the top of the casing and fixed so that the tube may slide therein, is an inlet head 12 for power fluid. Power fluid from any suitable source and under appropriate control is applied to the space 13 at the top of the casing and is adapted to'enter the head 12 through ports 14 in each of which is preferably fastened a filter 15 such as a piece of textile or metallic cloth, held in place y wing nuts 16'. A portion of the bore of the head 12 is enlarged as at 17 to accommodate the power fluid. Such power fluid may be compressed air, steam or the like.

'Surrounding the flow pipe 11 is a power fluid confining pipe generally designated 18,

the same having an upper section 19 screw the flow pipe of the well. The lower portion of the flow pipe 11 is telescoped over the nipple or pipe and the telescoped portions as best shown in Figures 2 and 10 have openings 26 therethrough adapted at times to register through sliding movement of the flow pipe and normally to remain out of register. When such ports are in register,-the power fluid is permitted to return into the flow pipe 11 and outside of the well, to aid in dislodging any obstruction in the flow pipe and generally clean out the entire flow line above such openings. Mounted on the exterior of the pipe 18 in any suitable manner, are one or more rubber or other swabs 27, of any conventional form, which serve to seal the well against passage of power fluid past the same and thus form the bottom of the chamber 13. 1

All of the pipes constituting the section 18 are of greater diameter than the flow pipe and hence a passage is provided about the same generally designated 28, for the downward passage of the power fluid.

Disposed in the space 28 are inlet pipes for the power fluid designated 29, the same beingscrew threaded as best shown in Figure 3 to the upper barrel head 24 and the same being perforated as at 30 so that the power fluid may enterthe same. I

Screwed to the barrel head 24 is a barrel section 32 which is also screwed to an upper block 33. Block 33 has another barrel section 34 screwedthereto to which is screwed,

at 35, a lower barrel section 36. The lower barrel section 36 has a' perforated oil inlet trap or pipe 37 suitably attached thereto which carries a'cage 38 at its top, whichis of hollow form, and confines a ball valve 39 adapted to engage a seat 40 therein, at times, this structure constituting the lower or inlet valve of thedevice for the oil to trap it after it is sucked up, so that it maybe pumped or expressed through the flow tube and passages in communication therewith or forming part thereof.

Fasten'ed in the barrel section 34 as by means of screws 41 is a lower head 42 and located within such section 34 midway of the heads 33 and 42, is avalve mounting.

- ably mounted through the block 33, pipe44,

' barrel section 32.

block 43, pipe 45 and block 42.

As shown in Figure 3, the piston tube"- or rod 45 carries a head 46.0f any desired construction which will Provide intimate wiping and sealing contact with the bore of the Such piston 46 mounts a cage 47 of skeleton or perforated form as shown which is adapted to communicate with. I

the bore of the barrel section 32 and which mounts-a .ball valve 48 which at times engages a seat 49 carried by the cage. When the valve 48is closed as shown in Figure 3, oil in the flow pipe cannot pass the same and return to the well.

On the other'hand, upward displacement or flow of the oil will displace the valve 48 so that the same may pass through the cage and into the flo'w pipe.

At the lower end of the piston rod 45 and within the barrel section 36, is a lower piston head 50 which is of any suitable or conventional construction adapted to intimately wipe and have sealing engagement with the bore of the section 36. i

It will be realized that on the up-stroke of the piston, the valve 48 will be closed and the valve 39 open whereby oil will be trapped for discharge through the flow pipe while on the down-stroke of the piston, the valve 39 will close to eflect the trapping of the oil and the valve 48 will be open, so that the oil will pass'from the barrel section 36, through the hollow piston rod 45 into barrel section 32 and from the same through the head 24, nipple 25 and the flow pipe 11.

Through passages 51 inthe barrel head 24, the power fluid from pipes 29 passes through pipes 52 which are screw threaded to saidhead 24 and which are screw threaded in passageways 53 of the block 33, such passages converging and communicating with an inlet pipe 54 screw threaded to block 33 and having suitable detachable connection at 55 with the valve mounting block 43. Such pipe 54 communicates with a passagev56 in said valve mounting block, said passage be-' of the ower fluid is shown at 58, being of the oscillatory type and operable on a horizontal axis and in a chamber 59, with which the passageway 56 communicates through a branch 66. Power fluid entering chamber 59 by branch 60, the valvebeing in the position shown in full lines in Figure 22, is directed through branch 6O into a passageway 67 to a pipe 67 and 'from thence through passageway 68 into barrel section 32 under piston 46, thus raising said piston 46, tubular piston rod 45 and the plston 50 in barrel section 36. I

7 -During this operation power fluid will be exhausted from the barrelsection .36 through a passageway 64 in. block 42,- a pipe 63 communicating therewith, and a passageway 62 in valve block 43; through a branch 61 into Ill valve 58, as shown in full lines,

v7 4, the former being journale valve chamber 59, then through a branch 61 into a passageway 66, in the valve block 43, into the space between valve block 43 and block 33, thence into and through passages 65 in block 33, and thence through pipes 69 screwed or otherwise attached to the block 33 and which communicates with the flow .line at ports 7 O in the head 24.

Referring to Figure 22, the position. of is suc that power fluid is supplied to barrel section 32 and exhausted from barrel section 36 by reason of the path just traced. When the valve 58 is in the dotted line position of Figure 22 ower fluid entering valve chamber 59 is directed through branch 61, passage 62, pipe 63 and passage 64 into barrel section 36 above the piston 50, to drive it downwardly, and barrel section 32 takes place through passage 68, pipe 67,

assage 56, through valve chamber 59 and out through branch 61 as above described. A suitable means is provided to automatically shift the position of the valve 58 for the inlet and exhaust of the power fluid, through the operation of the piston, as will now be described.

Said valve 58 is held in its chamber by a retaining plate 71 screwed at 72 to the block 43, the valve having trunnions 73 and d in the block 43 and the latter journaledn the plate 71 and extending outwardly beyond the same and having a pinion 75 fixed thereon. valve actuating slide 76 is movable longitudinally of the block 43, having an enlarge- 7 ment 77 disposed in a slot'or passageway 78 in the block and the same at its ends at its opposite extremes of movement, thus limiting the movement of the valve actuating slide .and accordingly of the valve.

When the valve 58 is in full line position, as shown inFigure slide is held against movement by fingers 79 as shown in Figure 4, such fingers being pivoted at 80 to the block 43 and engaging in notches 81 of the valve actuating slide. After the fingers 79 release the valve actuating slide and the same moves to its other extreme of movement, it is engaged by detent fingers 82 pivoted to block 43 at 83 and engageable in notches 84 of the valve actuating slide.

Leaf springs 85 are fastened to the ends of the block 43 and engage the fingers 79 and 82 and urge them into engagement with their respective notches. I I

Actuating rods 86 and 87 are employed to spread or release the detent fingers 79 and 82, respectively, from the valve actuatingslide 76. Such rods are slidably mounted in blocks 2 and 33, respectively, a stuffing box 88 preferably being provided in the block 42 about detent of such length as to engage 22, the valve actuatingactuating slide has inand 90,

the rod 86. The valve wardly extending through which the coil springs 91 and 92 surround the rods 86 and 87 engaging abutments 93 and 94 thereon, respectively, tions or abutments 89 an 90. The fingers 79 have inwardly extending projections 95 terminating relatively close to each other an the fingers 82 have similar projections 96 The free ends of the rods 86 and ranged for abutment respectively, ton heads 50 and 46. The springs 91 and 92 are under compression, one at a time. Thus with the valve in the exhaust position as in Figures 3 and 4, the spring-91 is under comand also engaging the .projec ression as. a result of the previous movement a of the valve actuating slide 76, and is so held by the fingers 79. The upward movement of the piston head 50 will engage the rod 86, forcing the upper pointed end thereof between the projections 95, thus spreading the fingers 79 whereupon spring 91 will cause slide 76 to move to its uppermost or other position, so that through the intermeshing of clutch teeth 97 thereon with the pinion 75, the valve 58 will move to vertical position duringwhich movement,-the detent 82 will snap into the notches 84 and hold the valve in that position until the descent of piston 46, the same on descent engaging the rod 87, which movement first compresses spring 92, then spreads the projections 96 and disengages the detent 82 from the valve actuating slide, which spring 92 being under compression, thereafter causes the valve actuating slide to move to its lowermost position to return the valve to exhaust position an cause reengagement of the detent 79 with the slide. In this manner, with power fluid constantly supplied, the pistons operate, as hereinbeforedescribed, to alternately move the valve 58 to position to direct the fluid pressure and to exhaust the same, resulting in pumping action.

By providing the ports 70 from the exhaust pipes 69 into the flow line 25 through block 24, the exhaust fluid is utilized to assist in elevating the fluid pumped from the well and to,in a measure, relieve piston 46. Furthermore by arranging the exhaust from passage 66 into the space between blocks 33 and 43 and locating the relief valve 57 in this space any discharge by. said valve also escapes through the exhaust pipes 69 and'their connections;

Various changes may be resorted to provided they fall within the spirit and scope of the invention.

1 actuating slidehaving rack teethin engage-- the weight on JOHN M. WOLF.

having pro- 

